I just migrated my website online ( )
Everything seems ok (almost) except I can’t login to my back-office anymore I get an invalid login alert.
Though I use the same ID’s as on local server. Emptied cache and tried with the site/accounts/.logins file deleted.
Yes. What you could do, is remove the account on the remote server, allow panel installation on the remote in your config and try to create a new user.
I had the same problem and realized that I forgot to transfer the hidden .htpasswd files as well.
E.g. : site/accounts/folderXY/.htpasswd
Hope this helps!